JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (03): 179-183.doi: 10.3969/j.issn.1000-2006.2014.03.035

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Optimization of preparation of mid-temperature curing phenol-formaldehyde resin by response surface methodology

HUANG Jianfeng1,2, CHEN Nairong1, LIN Qiaojia1*,RAO Jiuping1,ZENG Qinzhi1   

  1. 1.College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2.China Building Material Test &
    Certification Group Xiamen Hongye Co.,Ltd., Xiamen 361000, China
  • Online:2014-05-15 Published:2014-05-15

Abstract: Urea and resorcinol were used as modifiers to prepare mid-temperature curing phenol-formaldehyde resin(PF)in alkaline condition, and the response surface methodology was used to optimize the effects of raw materials ratio on bonding strength. The optimal raw materials ratio of PF were determined as follows: molar ratios of formaldehyde and alkali to phenol were 2.32 and 0.56, respectively; and the mass of urea and resorcinol to phenol were 20.03% and 9.98%, respectively. Under these raw materials ratio, the curing temperature of the PF was in the range of 105-115 ℃.

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